Wicket-具有Java继承的可重用面板 [英] Wicket - Reusable panels with java inheritance

问题描述

1. 我有以下Java类:

1. I have following java classes:

我有两个表单组件，它们使用CompoundPropertyModel映射到Type1Task和Type2Task:

I have a two form components which are mapped to Type1Task and Type2Task with a CompoundPropertyModel:

问题:重复的代码.我希望D和E字段映射到任务，而不是任务类型.我拥有Java继承时，有什么方法可以使它可重用?

如果可以，您能给我提供教程或参考资料吗?

If yes, can u provide me with tutorials or references?

其他信息:任务可以包含一个计时器(线程).如果单击提交按钮，计时器将启动.

Additional info: The task can contain a timer(thread). If you click on submit button the timer will be started.

谢谢！

推荐答案

您可以在ui中复制相同的类层次结构.

You can duplicate the same class hierarchy in the ui.

public class TaskFormPanel<T extends Task> extends Panel {

public TaskFormPanel(String id, IModel<T> model)
     super(id, new CompoundPropertyModel(model));
     add(new TextField("d"));
     add(new TextField("e));
     add(new Button("submit) {
           (...)
     }
}

}


public class Task1FormPanel extends TaskFormPanel<Task1> {

public TaskFormPanel(String id, IModel<Task1> model)
     super(id, model);
     add(new TextField("a"));
     add(new TextField("b));
     add(new TextField("c"));
}

}


public class Task2FormPanel extends TaskFormPanel<Task2> {

public TaskFormPanel(String id, IModel<Task1> model)
     super(id, model);
     add(new TextField("x"));
     add(new TextField("y));
     add(new TextField("z"));
}

}

还有HTML文件:

TaskFormPanel:

TaskFormPanel:

<wicket:panel> 
   <wicket:child/>
   <label>d</label> <input wicket:id="d">
   <label>e</label> <input wicket:id="e">
   <input type="submit" wicket:id="submit"/>
</wicket:panel>

Task1Panel.html:

Task1Panel.html:

<wicket:extend>
   <label>a</label> <input wicket:id="a">
   <label>b</label> <input wicket:id="b">
   <label>c</label> <input wicket:id="c">
</wicket:extend>

Task2Panel.html:

Task2Panel.html:

<wicket:extend>
   <label>x</label> <input wicket:id="x">
   <label>y</label> <input wicket:id="y">
   <label>z</label> <input wicket:id="z">
</wicket:extend>

注意:如果任务对象包含对线程的引用，请确保使用一些loadabledetachablemodel来包装任务对象，否则将遇到序列化问题.一个单例注册表可以存储您的任务，并可以通过一些随机键将其返回.

Note: make sure you use some loadabledetachablemodel to wrap the task objects in if they contain a reference to a thread otherwise you will run into serialization issues. A singleton registry that stores your tasks and can return them by some random key is enough.

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